The Eltingville physician was among more than three dozen suspects arrested last year. Federal prosecutors said the suspects set up "medical fraud mills" at which patients received medically unnecessary treatments for injuries allegedly suffered in car accidents.

Ten doctors were accused of lending their names and medical licenses to the clinics which, authorities said, were created solely to defraud insurance companies.

The doctors were "straw owners" and the clinics were run by "controllers" who used runners to recruit auto accident passengers, said authorities.

Dr. Geris, 55, denied the allegations from the outset. Several other Staten Islanders are charged in the scheme.

Court papers contain no allegations against his Staten Island office.

Dr. Geris, 55, denied the allegations from the outset.

The source said Monday afternoon that Dr. Geris is only defendant whose case has been disposed of.

Jurors continue to deliberate the fates of the other defendants after an extensive trial.

In 2011, Dr. Geris was among 91 people charged -- including physicians and other medical professionals -- with participating in a Medicare billing scheme that allegedly ripped off $295 million.

The suspects were accused of paying kickbacks to Medicare beneficiaries who were prescribed medically unnecessary services. Those fraudulent claims for physical therapy and diagnostic tests were submitted to Medicare for payment, prosecutors said.

The alleged scam was run out of the Solstice Wellness Center in Rockaway Park, Queens, between January 2009 and April 2010.

Dr. Geris previously told the Advance he worked part-time at Solstice Wellness for several months beginning in late 2009 and ending in early 2010. That time overlapped the period when the alleged crimes occurred.

The New Jersey resident maintained he never paid any kickbacks or prescribed bogus services.

The internist has been licensed to practice in the state since 1996 and has a spotless disciplinary history, according to online state Health Department records.

Dr. Geris and his lawyer could not immediately be reached Monday for comment.